64位ubuntu12.04.4 LTS 安装skype
我的电脑64位，Ubuntu 12.04.4 LTS
用下面的安装方法，成功安装，大概用来5分钟。
Installing Skype
Users of 64-bit Ubuntu, should enable MultiArch if it isn't already enabled by running the command
sudo dpkg --add-architecture i386
Since Ubuntu 10.04 (Lucid Lynx), Skype is part of the Canonical partner repository. To install Skype add the Canonical Partner Repository. You can do this by running the command
sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"
Then install Skype via the Software-Center or via the Terminal.
sudo apt-get update && sudo apt-get install skype
It is highly recommended to use the package provided in the Canonical partner repository, not the one distributed from the skype website, as the skype website currently points users to the wrong package for 64-bit systems of Ubuntu 11.10 and above.
摘自：https://help.ubuntu.com/community/Skype